TABLE 1.
SICCA cohort demographics and smoking status
| Never smoker, n (%) | Past smoker, n (%) | Current smoker, n (%) | |
|---|---|---|---|
| Classified as having SS (n = 1583) a | 1022 (66.3) | 439 (28.5) | 77 (5) |
| Classified as not having SS (n = 1851) a | 970 (52.2) | 632 (34) | 249 (13.4) |
| Sex | |||
| Women | 1916 (60.2) | 974 (30.6) | 295 (9.3) |
| Men | 156 (50.5) | 118 (38.2) | 35 (11.3) |
| Race | |||
| White | 967 (47.9) | 816 (40.5) | 234 (11.6) |
| Other than White | 1104 (74.9) | 275 (18.7) | 95 (6.4) |
| Age group b | |||
| 21‐30 years | 131 (66.5) | 37 (18.8) | 29 (14.7) |
| 31‐45 years | 539 (67.1) | 195 (24.3) | 69 (8.6) |
| 46‐64 years | 1029 (57.5) | 569 (31.8) | 193 (10.8) |
| 65 years and older | 372 (53.1) | 291 (41.5) | 38 (5.4) |
| Site | |||
| Argentina | 229 (52.9) | 149 (34.4) | 55 (12.7) |
| China | 312 (93.7) | 13 (3.9) | 8 (2.4) |
| Denmark | 220 (36.4) | 245 (40.6) | 139 (23.0) |
| India | 149 (92.5) | 10 (6.2) | 2 (1.2) |
| Johns Hopkins (United States) | 157 (51.5) | 127 (41.6) | 21 (6.9) |
| Japan | 271 (73.6) | 72 (19.6) | 25 (6.8) |
| UCSF (United States) | 406 (56.9) | 277 (38.8) | 31 (4.3) |
| United Kingdom | 168 (54.0) | 108 (34.7) | 35 (11.3) |
| UPenn (United States) | 160 (60.4) | 91 (34.3) | 14 (5.3) |
Abbreviation: SICCA, Sjögren's International Collaborative Clinical Alliance; SS, Sjögren syndrome; UCSF, University of California, San Francisco; UPenn, University of Pennsylvania.
a
One hundred twenty‐five participants could not be classified by SS status, smoking status, or both.
b
Twenty‐two participants did not have age available.